Tough, Powerful, Reliable
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TOUGH, POWERFUL, RELIABLE Disc Brake Rotor Catalogue 2012 4WD/SUV “Our total commitment to safety, service, supply, value and support is what separates us from the rest” Phillip Joseph Managing Director Mark Joseph Sales & Marketing Director (USA) “From cast iron to the finished product – total control” DBA XG-150 Cast Iron After decades of design and development with race teams around the world, Disc Brakes Australia developed a proprietary cast iron ( XG-150 ) for use in all of it’s premium performance disc brake rotors. This specially formulated iron is rich in carbon and alloyed to produce excellent thermal characteristics, which is a key factor in the production of the casting, combined with our patented Kangaroo Paw ventilation design. With it’s supersaturated solution of carbon in an iron matrix, the excess carbon precipitates out in the form of graphite flakes. The morphology of these graphite flakes provide excellent thermal properties, increasing the thermal shock resistance and allowing it to survive rapid thermal cycling with core-heat levels of approximately 700oC and above. Coupled together with DBA’s TSP™ process, where the cast iron is stress relieved during the manufacturing process; the XG-150 cast iron structure is ideal for heavy braking and perfect for motorsport applications. XG-150 Features & Benefits Feature Benefit Anthony McKelvey Manufacturing Director High thermal conductivity Reduced brake fade, AJAX Foundry improved heat dissipation Foundry Consistent brake pedal feel Low modulus of elasticity Reduced tendency to distort, reduced risk of brake shudder Safety Service Supply Peter McKelvey Sales Director, AJAX Foundry Value Raw Castings Support Global distribution and warehousing Machining Packaging & Distribution Features X-GOLD cross-drilled Passenger 4 4WD / SUV 4 3 Friction surface is CBN (Cubic Boron Features Passenger 4 Commercial 4 Nitride) machine turned for 4WD / SUV 4 3 Patented ‘Kangaroo Paw’ ventilation improved DTV (Disc thickness design* provides greater heat variation) and parallelism. dissipation 3 As part of DBA’s assurance of 3 Non-directional cross-drill and slot product quality, each rotor arrives design eliminates the need for left to you in a moisture proof corrosion and right discs protection dual layer packaging 3 The X-GOLD cross-drill design 3 Every DBA rotor is marked with its increases the consistency and part number, manufacture date effectiveness of every brake stop and batch code for complete traceability of product. 3 Paint protection on non-friction areas enhances appearance 3 To protect your investment we have added additional protective coatings to maintain the value and appearance of your brake rotor X-GOLD series rotors perform well in wet conditions and safely during an emergency braking situation. The drilling and slotting provides an efficient means of dispersing water and friction gases. Looks great behind open-style alloy wheels. * The Kangaroo Paw design is not available on all part numbers, ask your supplier for availability. 4000 series Features 4000XS premium cross-drilled Passenger 4 4WD / SUV 4 3 Patented ‘Kangaroo Paw’ ventilation Features Passenger 4 Commercial 4 design* provides greater heat Performance 4 Motorsport 4 3 Patented ‘Kangaroo Paw’ ventilation dissipation 4WD / SUV 4 design* provides greater heat 3 XG150 High Carbon Alloyed dissipation Iron increases the thermal capacity properties of the rotor 3 XG150 High Carbon Alloyed Iron increases the thermal capacity 3 TSP (Thermal Stability Profiling) properties and allows the rotor to prolongs the service life of the rotor handle constant extremes of heat 3 Heat paint markings change colour over extended periods of time. to monitor peak braking 3 TSP (Thermal Stability Profiling) temperatures prolongs the service life of the rotor 3 Paint protection on non-friction 3 Non-directional XS cross-drill and areas enhances appearance slot design eliminates the need for left and right discs 3 Heat paint markings change colour to monitor peak braking HEAVY DUTY temperatures 3 Paint protection on non-friction areas protect and enhance rotor appearance For the spirited street driver or performance modified street vehicle, the 4000XS cross-drilled and slotted design is the best option. Ideal for heavy vehicles such as SUV’s, 4WD’s and SPECIAL NotE : XS design is for street use only. Available for a limited range commercial vehicles. These rotors are well suited for of vehicle models. Ask your supplier for availability extreme braking applications, particularly when carrying heavy loads or towing trailers and camper-vans. * The Kangaroo Paw design is not available on all part numbers, ask your supplier for availability. T2 slot design 4000 series T3 slot design Features Passenger 4 Features Passenger 4 4WD / SUV 4 Performance 4 3 Patented ‘Kangaroo Paw’ ventilation 3 Patented ‘Kangaroo Paw’ ventilation Commercial 4 4 design* provides greater heat design* provides greater heat Motorsport dissipation dissipation 3 Bi-Symmetrical T2 curve slots 3 Tri-Symmetrical T3 Slot design dampen the vibration harmonics dampens the vibration harmonics or noise, resulting in a quieter, resulting in a quieter, responsive responsive and smoother brake pedal feel and smoother brake pedal feel 3 T2 slot design provides even pad 3 XG150 High Carbon Alloyed Iron wear and assists in minimising increases the thermal capacity glazing of pad surfaces properties of the rotor 3 Non-directional slot design 3 TSP process allows the rotor to eliminates the need for left and handle constant extremes of heat right discs over extended periods of time. 3 Paint protection on non-friction 3 Protection paint on hub areas enhances appearance and non friction surfaces 3 Better brake pedal feel 3 Heat paint markings change colour to monitor peak braking temperatures Ideal for towing and heavy loads, where 4000 series T3 is a heavy-duty performance spec additional heat is usually generated. rotor is designed specifically for the spirited street or track driver. The T2 slot efficiently clears dust and debris, while creating better friction and a cleaner disc The universal T3 slot design efficiently clears dust surface. and debris, while maintaining consistent friction and cleaner disc surface. * The Kangaroo Paw design is not available on all part numbers, ask your supplier for availability. * The Kangaroo Paw design is not available on all part numbers, ask your supplier for availability. 4000 SERIES ADVANTAGES & BENEFITS Feature Description Advantages Benefits Tri-Symmetrical curve slots A quieter, responsive and dampens the vibration harmonics smoother brake pedal feel or noise T3 Slot 48 precision Increased number of out-gassing Increases the consistency and CNC machined slots exit points for brake pad friction effectiveness of every brake stop gasses to escape through Universal slot design Eliminates the need for left and right discs Increased surface area resulting Minimises brake fade and in greater heat dissipation increases braking effectiveness Kangaroo Paw – 144 diamond and tear drop pillar ventilation Increased surface area resulting Prolongs service life for both system. in greater heat dissipation pads and rotors. Reduces mechanical damage and associated costs An increased thermal Prolongs the service life of the capacity property allows the rotor disc rotor to handle constant extremes of XG150 High Carbon heat over extended periods of Alloyed Iron time. Special formulation designed to Prolongs the service life of the respond to DBA’s TSP process disc rotor Heat paint markings change Offers the driver a clear indica- colour at specific temperature tion of peak braking temperatures thresholds Thermo-graphic Temperature When temperature thresholds Allows the driver to monitor rotor Monitoring are exceeded paint markings will fatigue and decide on rotor permanently change colour replacement and to assist resellers with warranty claims Stabilises the natural rotor Minimises warping and cracking stresses by realigning the and prolongs the service life of Thermal Stability microstructure of the iron the rotor. Profiling (TSP) Reduces corrosion Stops any unsightly rust formation Paint protection on non-friction areas Enhances appearance Adds value to the product * The Kangaroo Paw design is not available on all part numbers, ask your supplier for availability. Performance 4000 series - important information There are many factors that directly affect THERMO-GRAPHIC TEMPERATURE MONITORING the longevity of disc rotors and the safety Markings are placed on the outer edge of each rotor of the driver when using a high Initial Colour When the rotor exceeds The colour will performance vehicles. this core temperature: change to: The major considerations are listed below: GREEN 430ºC / 806ºF WHITE 1 Correct BEDDING OF rotorS Generally, experienced drivers will use their track rotors on the street with ORANGE 560ºC / 1040ºF YELLOW standard pads for a week or two before any track use. Driving in normal traffic conditions for 200 to 300 km (180 miles) is more effective and less likely to prematurely fatigue the disc rotor material. If you are unable to utilise this method or prefer the accelerate and brake RED 610ºC / 1130ºF WHITE repetition shortcut, please warm your brakes up first. Drive for at least 1-2 kms (1 mile), with long easy braking. The thermal shock from braking at high speed on cold rotors WILL prematurely fatigue your brakes. 2 PAD SELECTION Safe operating temperatures of brake fluid. Standard street pads are NOT suitable for track day applications. Core A B Temperatures of rotors used on track days are generally in the 450ºC to 600ºC Brake Fluid Type Dry Boiling Point Wet Boiling Point (1110ºF) range and peak surface temperatures up to 800ºC (1470ºF) for 5 seconds or more. Street pads will generally start to break down at 300ºC to 350ºC (570ºF to 660ºF), DOT 3 205ºC / 401ºF 140ºC / 284ºF causing brake pad fade and glazing of the rotor surface. Also the pad structure is degraded resulting in poorer product performance. DOT 4 230ºC / 446ºF 155ºC / 311ºF 3 WARM UP & cooL DOWN Disc rotors must be preheated before track sprints to reduce the thermal shock from sudden high speed braking.